Started working on 2 min heartbeats.

assets/js/WakaTime.js

@@ -1,6 +1,66 @@
-/**
- * I think that I am going to need this.
- */
+var UrlHelper = require('./UrlHelper');
+
 class WakaTime {
 
+    detectionIntervalInSeconds = 60; //default
+
+    loggingType = 'domain'; //default
+
+    recordHeartbeat()
+    {
+        console.log('recording heartbeat.');
+
+        chrome.idle.queryState(this.detectionIntervalInSeconds, (newState) => {
+
+            console.log(newState);
+
+            if(newState === 'active')
+            {
+                // Get current tab URL.
+                chrome.tabs.query({active: true}, (tabs) => {
+                    console.log(tabs[0].url);
+
+                    this.sendHeartbeat(tabs[0].url);
+                });
+            }
+        })
+    }
+
+    sendHeartbeat(entity)
+    {
+        chrome.storage.sync.get({
+            loggingType: this.loggingType
+        }, function(items) {
+
+            if(items.loggingType == 'domain') {
+                console.log('sending entity with type domain');
+
+                // Get only the domain from the entity.
+                // And send that in heartbeat
+                console.log(UrlHelper.getDomainFromUrl(entity));
+
+                var domain = UrlHelper.getDomainFromUrl(entity);
+
+                var data = {
+                    entity: domain,
+                    type: 'domain',
+                    time: Math.round((new Date()).getTime() / 1000),
+                    is_debugging: false
+                };
+
+                console.log(data);
+
+
+            }
+            else if (items.loggingType == 'url') {
+                console.log('sending entity with type url');
+
+                // Send entity in heartbeat
+            }
+
+        });
+    }
+
 }
+
+export default WakaTime;